one was the debate between nixon and kennedy. it was televised. kennedy came off as being much smoother, more likesable. that's an example of how high the stakes would have to be for there to be a real game-changer. i think what you're going to see more likely is viewers watching these debates in the aggregate. they're all very close together. and advisers are saying they're expecting the polls to get tighter as we get closer to election day barring any major misstep from either candidate. martin. >> nbc's krit tin welker, from politics to pugilism, you are there. thank you so much, kristin. >> reporter: thanks, martin. we'll be right back. [ man ] ring ring... progresso this reduced sodium soup says it may help lower cholesterol, how does it work? you just have to eat it as part of your heart healthy diet. step 1. eat the soup. all those veggies and beans, that's what may help lower your cholesterol and -- well that's easy [ male announcer ] progresso. you gotta taste this soup. i've got a nice long life ahead. big plans. so when i found out medi